diff --git a/Seekfree_TC264_Opensource_Library/Seekfree_TC264_dual_camera_Opensource_Library/Seekfree_TC264_Opensource_Library/user/isr.c b/Seekfree_TC264_Opensource_Library/Seekfree_TC264_dual_camera_Opensource_Library/Seekfree_TC264_Opensource_Library/user/isr.c
index 5e54e61..b04723c 100644
--- a/Seekfree_TC264_Opensource_Library/Seekfree_TC264_dual_camera_Opensource_Library/Seekfree_TC264_Opensource_Library/user/isr.c
+++ b/Seekfree_TC264_Opensource_Library/Seekfree_TC264_dual_camera_Opensource_Library/Seekfree_TC264_Opensource_Library/user/isr.c
@@ -39,9 +39,16 @@
 // 对于TC系列默认是不支持中断嵌套的，希望支持中断嵌套需要在中断内使用 interrupt_global_enable(0); 来开启中断嵌套
 // 简单点说实际上进入中断后TC系列的硬件自动调用了 interrupt_global_disable(); 来拒绝响应任何的中断，因此需要我们自己手动调用 interrupt_global_enable(0); 来开启中断的响应。
 
+// **************************** PIT中断函数 ****************************
+IFX_INTERRUPT(cc60_pit_ch0_isr, 0, CCU6_0_CH0_ISR_PRIORITY)
+{
+    interrupt_global_enable(0);                     // 开启中断嵌套
+    pit_clear_flag(CCU60_CH0);
 
 
 
+}
+
 
 
 IFX_INTERRUPT(cc60_pit_ch1_isr, 0, CCU6_0_CH1_ISR_PRIORITY)